Relation between bilateral differences in internal jugular vein caliber and flow patterns of dural venous sinuses

Kazunobu Saiki,Tetsuaki Wakebe,Toshiyuki Tsurumoto,Keishi Okamoto

doi:10.1007/s12565-013-0176-z

Kazunobu Saiki, Tetsuaki Wakebe + Show 2 more

Open Access

https://doi.org/10.1007/s12565-013-0176-z

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Journal: Anatomical Science International	Publication Date: Apr 10, 2013
Citations: 27	License type: CC BY 2.0

Affiliation: Nagasaki University

Abstract

We measured the calibers of the left and right internal jugular veins (IJV) and sizes of the left and right transverse sinuses (TS) in 91 cadavers, compared them between the left and right sides, and also evaluated the drainage patterns of the superior sagittal sinus (SSS) and straight sinus (=rectal sinus, RS) in the torcular Herophili. In addition, the running type of groove for the SSS was investigated. The results were as follows: (1) The right IJV was larger in 81.3 %, while the left IJV was larger in only 11.0 %. (2) The drainage pattern of the SSS was the right type in 73.6 %, intermediate type in 14.3 %, and left type in 12.1 %. (3) The drainage pattern of the RS was the right type in 27.5 %, intermediate type in 25.3 %, and left type in 47.3 %. (4) The running type of groove for the SSS was mostly consistent with the drainage pattern of this sinus. (5) Concerning the relationships among these findings including the size of the TS, the drainage pattern of the SSS was mostly consistent with the side showing a larger TS as well as the side showing a larger IJV. These results suggest that the pattern of drainage of the SSS into the left and right TS affects the size of the TS and the running type of groove for the SSS, and is also closely involved in the caliber of the IJV. A discussion of the embryological, genetic, and clinical implications of these results is presented.

Highlights

The internal jugular vein (IJV) is a major vein collecting blood from the head and neck and is a clinically important vein
The results were as follows: (1) The right internal jugular veins (IJV) was larger in 81.3 %, while the left IJV was larger in only 11.0 %. (2) The drainage pattern of the sagittal sinus (SSS) was the right type in 73.6 %, intermediate type in 14.3 %, and left type in 12.1 %. (3) The drainage pattern of the RS was the right type in 27.5 %, intermediate type in 25.3 %, and left type in 47.3 %. (4) The running type of groove for the SSS was mostly consistent with the drainage pattern of this sinus
When the left and right IJV calibers were compared in each individual (IJV-c, differences C2 mm), Fig. 4 Classification of six flowing patterns in the SSS and their frequencies in the present study imperfect-L perfect-L

Summary

Introduction

The internal jugular vein (IJV) is a major vein collecting blood from the head and neck and is a clinically important vein. Singh et al (2004) and Fukusumi et al (2010) performed image reconstruction to evaluate flow in the SSS in the torcular Herophili region using CT and MRI, and observed similar tendencies. These findings suggest that the drainage pattern of the dural sinuses, the SSS and RS, affects the IJV caliber. There have been no detailed studies investigating the drainage patterns of the SSS and RS, quantitative comparison of the sizes of the TS and IJV between the left and right sides, or the detailed evaluation of these relationships. The relationship between the groove for the SSS and the groove for the TS in the internal occipital protuberance on the inner surface of the skull was investigated

Materials and methods

Results

80 C Running type of Groove for SSS

Discussion

Literature

Limitations